feat(website): pace modes/undo-redo/joins casts (split submits, surface state)

Split the short pivotal commands from their submit so they read before
the screen changes (`mode advanced` in modes/joins; `undo`/`redo` before
their confirm modals), and surface the source tables in joins with
`show data` before the join, since the schema sidebar is hidden at 90 cols.
This commit is contained in:
claude@clouddev1
2026-06-11 13:49:40 +00:00
parent ad43cce945
commit 946dd88db6
4 changed files with 1394 additions and 1330 deletions
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